That makes perfect sense that I would see my hairline regenerating on the top of my head.
I mean, who the hell would believe in a 'bald' time-traveler?
They would look at me with sarcasm by the fact that I am supposed to have great powers but yet I can't even cure the common male-pattern baldness on my head.
So, yeah, my hair would have to start regrowing for no other explainable medical reason.